PowerPoint Slideshow about 'WCARC Beacon Project' - Leo

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For a choke balun to reduce RF current on the outer coax shield by 20 dB, you need 500 ohms of impedance (20 log [500/50]). Three (50MHz) or two (over 100 MHz) of Wurth 7470035 ferrite cylinders provide 500 ohms with ID of 6.9 mm for LMR-240 or RG-6. 23CM?